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Tag: "millions" at biology news

New dyslexia theory blames 'noise'

...mbols). What is known is that dyslexia affects millions of children, with estimates of its incidence ranging from 5 to 15 percent. Sperling, who conducted her research as a doctoral student at USC, said the new findings point to a deeper problem - not just a visual deficit - affecting all areas of per...

Brain regions do not communicate efficiently in adults with autism

...he EEGs, which measure the activity of hundreds of millions of brain cells, were collected with an array of 124 electrodes while the people were seated and relaxed with their eyes closed for two minutes. The researchers found patterns of higher than normal neural connectivity in the left hemisphere, part...

Public Library of Science to launch new, open access journal on neglected tropical diseases

... will focus on the overlooked diseases that strike millions of people every year in poor countries, including ...." Each year, neglected tropical diseases strike millions of the world's poorest people in sub-Saharan Africa, Asia, and Latin America. They stunt children's...

Caterpillars tell us how bacteria cause disease

...pinpoint the genes which code for virulence. With millions of species worldwide, insects provide a massive pool of hosts for bacterial diseases. The immune system of insects is very similar to the inborn immune system of mammals. By living first in insects some bacteria have evolved to survive immune system ...

Advance helps explain stem cell behavior

...amental to life that it has been conserved through millions of years of evolution, and is largely the same among vertebrate animal species, whether they are fish, horses, mice or humans. Once the process is more fully understood, it should be much more feasible to influence and control it, researchers say. ...

Too mellow for our predatory world

...ges. This is also true for the marine iguanas. For millions of years they have lived without natural predators. In the course of evolution they have become excessively tame. Hundreds of reptiles doze, spread-eagled, on black lava rocks, soaking up the sun - behaviour that would be unthinkable in an environmen...

Bacteria that use radiated water as food

...ial communities are indeed permanent -- apparently millions of years old -- and depend not on sunlight but on radiation from uranium ores for their existence. Coauthors of the present paper learned of a new water-filled fracture inside a South African gold mine near the Johannesburg metropolitan area and vi...

Wheat gene may boost foods' nutrient content

... to nutritional deficiencies affecting hundreds of millions of children around the world. Results from the study will be reported in the Nov. 24 issue of the journal Science. "Wheat is one of the world's major crops, providing approximately one-fifth of all calories consumed by humans, therefore, even smal...

Researchers reveal mystery of bacterial magnetism

...bacteria in nature must be very small." "But over millions of years, this very subtle advantage has somehow produced bacterial magnetism." ...

Paying attention sets off symphony of cell synchronization

... of brain activity that can come to your rescue as millions of neurons together make the music that represents a vivid conscious experience," added Ken Paller, professor of psychology at Northwestern and co-investigator of the study. ...

Hard-wiring the fruit fly's visual system

...t the world they see. These visual maps consist of millions of nerve cell contacts that need to be wired corre...s, complexity is added because of the challenge of millions of neurons having to make billions of precise connections. You have to work with a gross topological...

Most widely used organic pesticide requires help to kill

...alent of any engineered plants, and are planted on millions of acres in the United States alone. Although Bt and the toxic proteins it makes have been studied for decades, how the microbe goes about killing the insects it infects has been assumed to be a simple toxin-mediated disruption of the cells that li...

Complexity constrains evolution of human brain genes

... brain tissue has actually slowed since the split, millions of years ago, between human and chimpanzee, an international research team reports in the December 26, 2006, issue of the journal, PLOS Biology. The rapid advance of the human brain, the authors maintain, has not been driven by evolution of protein ...

Scientists find a key to immune system's ability to remember

...agent and store it for future reference. Among the millions of naïve T cells, there are a few that are primed for active duty against an individual infectious agent. Following infection or vaccination, Lck initiates a biochemical chain of events that vastly increases the number of T cells that march off to co...

UGA scientists unravel 'molecular inch-worm' structure of walking-pneumonia bacterium

... Jarrat Jordan. M. pneumoniae infections affect millions worldwide, causing chronic bronchitis and atypical or "walking pneumonia," a term that describes cases of pneumonia that are distinct from acute, life-threatening pneumonia requiring a patient's hospitalization. Krause and others have been increas...

AIDS study challenges conventional treatment guidelines for HIV patients

...rapy, also known as HAART, is credited with saving millions of lives. However, potent side effects and issues of drug resistance, often cause doctors and patients to defer starting the medications, until it becomes medically necessary. In addition to the clinical ramifications, the findings suggest that ...

Tests for 'face-blindness' reveal disorder may not be so rare

... to 2 percent of the population -- suggesting that millions of people may be face-blind. "Until a few years a...ly made a similar estimate. It's conceivable that millions of people may have symptoms consistent with prosopagnosia, without even realizing it." Tests develo...

Scientists resuscitate a 5 million-year-old retrovirus

...es)--which inserted copies into the human germline millions of years ago. These copies were subsequently passed on from generation to generation. Remnants of HERVs now comprise nearly 8% of the human genome, but most were rendered inactive long ago by mutations. Heidmann and his colleagues set out to re-...

New study calculates millions of years saved in lives of AIDS patients

...he next 15-year period as having saved hundreds of millions of life-years, not just in North America but around the globe." ...

Amgen introduces comprehensive financial assistance programs for cancer patients

...ion programs in the industry. Amgen also donates millions of dollars to independent third-party administered patient assistance programs to help reduce the financial burden for uninsured or low-income patients. These programs build on Amgen's Reimbursement Connection®, which has been addressing the provi...

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